90 Trans. Acad. Sci. of St. Louis. 
tions, he spent the spring and summer of 1810 making 
short excursions within a radius of eighty to a hundred 
miles from St. Louis. In this manner he made an ex- 
haustive study of the natural history of this vicinity, and 
gathered many living specimens, which he forwarded to 
Liverpool. Besides studying the plants in the vicinity 
of St. Louis quite thoroughly, Bradbury explored the coal 
and lead mines, described the sink holes and fossil re- 
mains within twenty miles of the city, and advocated the 
manufacture of saltpeter from the niter found in the 
neighboring caves. 
Bradbury had intended to remove to the Arkansas 
river, when, early in 1811, he met at St. Louis the leaders 
of the overland Astorian expedition and gladly availed 
himself of their invitation to accompany them. Nuttall,’ 
with eagerness, had also embraced this opportunity to 
gratify his ardent desire for distant travel and his pas- 
sion for the study of Nature. They journeyed with the 
traders for eighteen hundred miles to the fur trading 
station among the Mandans. During their journey they 
experienced many hardships and were in constant dan- 
ger of losing their lives, being pursued and robbed by 
the Indians. Bradbury fell into their hands and only » 
saved his life by taking his watch to pieces and distribut- 
ing the works among the Indians. Nuttall, overcome by 
fatigue and hunger, and driven to despair in the wilder- 
ness, laid down and would inevitably have died, had he 
not been found by a friendly Indian, who placed him in 
his canoe and rowed him down the Missouri river to the 
7 Short, C. W. Transylvania Jour. Med. 34: 1416. 1836. 
Durand, Elias. Proc. Amer. Phil. Soc. 7: 297-315. 1860. 
Meehan, Thos. Gardeners’ Month. 2: 21-23. 1863. 
Britten, Jas., and Boulger, G. § Bio hi 
, Jas., , G. Ss. cal index of British and 
Irish botanists. 129. 1893. 8 
Pop. Sci. Month. 46: 689-696. 1895. 
Youmans, W. J. Pioneers of Science in America. 205-214. 1896. 
Harshberger, J. W. Botanists of Philadelphia, 151-159. 1899. 
Spaulding, Perley. A biographical history of botany at St. Louis, 
Missouri. Pop. Sci. Month. 1909: 52-57. 
